This basement museum explores the art and artistry of fascism.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

Amsterdam's Red Light District leaves little to the imagination.

A unique collection of gilded age mechanical pianos.

A beautifully eclectic mix of architectural styles.

The spectacular history of spectacles on display.

Cat art as far as the eye can see.

Museum preserving torture methods from the past.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Handsomely crafted representations of our round planet.

The beautiful baroque library of the Hapsburg empire.

A fake Transylvanian castle houses a cathedral of antlers.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A Hungarian optometrist's charming collection of Asian art and curiosities.

Museum dedicated to the terror regimes of Hungary.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

Electrical curiosity museum housed in an old transformer station.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Once the home of a hermetic monk, this cave now houses a small church.